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There were several changes compared to 0.84 (last release) and it is expected to be stronger by ~50 elo

v0.85: changes compared to 0.84

31 files changed, 2156 insertions(+), 728 deletions(-)

Bug fixes and features

- Fix and improve checkmating algorithm for KBN vs K in cases there is no TBs- Fix silent bug in file that links to the GTB interface- Fix bug that did not allow to measure lags appropriately in the last version- Analyze even when there is only one move available- Add a parameter allow_memory_override_by_gui = on/off in the ini file, so the parameters for memory cannot be overridden by the graphical user interface

Changes affecting strength

- Fractional plies implemented- Extensions, control modified- LMR parameters modified- Bonus for contact checks, tuned.- Queen tables added, individual values tuned.- Bishop tables added, individual values tuned.- Fix time management bug: when game started from a FEN position (black to move), first move from the next control was too slow.

Bug fixes and features- Fix a critical bug introduced just before v0.85 release that kill the hashtable performance- in UCI mode, it is displayed the PV when there is only one legal move available- tbhits are now shown in SCIDvsPC

Gaviota reached a level of maturity and completeness that makes it deserve the "1.0" version number. All the goals for that version have been reached. For instance, Gaviota now supports Multi PV.

New versions released are for Linux, Android, and Windows. They can be found the the in download section. There were several changes compared to 0.86 (last release) and it is expected to be stronger by ~85 elo. A detailed list of modifications are in the "change log" section

It is recommended that you do not use the old ini files (gaviota.ini.txt) since some switches have changed. Use the new one, or no ini file at all (options can be always be edited in the winboard or UCI graphic interface). The compressed folders for download include only a small book, as always. You can find a bigger book in the download section.

Thanks to Dann Corbit for compiling the Windows version for AVX systems (Sandy bridge Intel, bulldozer AMD, and up). That one won't work for Windows XP, though. However, there is one general compile for 64 and 32 bits. Please check which one is faster before using it. You can quickly test that from the terminal typing gaviota --benchmark to find the speed in nodes per second. Run it two or three times to make sure you get similar numbers. You are expected to see: